How Big Is 5MB

It is not possible to specify a size when you take an image, unless your camera has an option to produce a cropped image like mine does. Otherwise, the camera will produce an image with as many pixels as its sensor is designed to produce. Creating a specific size image is an export process from Lightroom. It is possible to create an image that is smaller or larger, depending on the specific needs. But it will be a copy of the original image.

How to take picture with 5MB size

To limit jpeg file size to 5MB, check the 'limit file size' box in the export dialog box and enter 5000(K).

I dont know if that's really what you want, but I didn't see this mentioned upon my scanning of the thread.

R

If they are asking for a 5GB file then that is the size of the open file, not the compressed file I would assume. Compression massively reduces file size, but the open file remains the same size. A jpg with compression that remain at 5 GB would have to be an absolutely massive file to start with, however a open file that was 5 MB as a jpg would be not that large. For a 16 bit file 5 MB is pretty small. All could be from exactly the same image with exactly the same real world size.

If the file is 8 bit RGB then it is calculated so (w in pixels x height in pixels x 24)/8 = size in bytes,     1 Kilobyte (KB) = 1,024 bytes    1 Megabyte (MB) = 1,024 KB 1 Gigabyte (GB) = 1,024 MB

Asking for a 5GB file from a photograph is a silly request. They should specify minimum/ maximum pixel dimensions as well as format and bit depth otherwsie it is a pretty meaningless request.